diff --git a/backend/internal/service/openai_gateway_usage.go b/backend/internal/service/openai_gateway_usage.go
index 0998dedbf0..2add82354b 100644
--- a/backend/internal/service/openai_gateway_usage.go
+++ b/backend/internal/service/openai_gateway_usage.go
@@ -918,7 +918,7 @@ func groupMediaPricingLooksIncomplete(group *Group) bool {
 // 运营者的修复手段是配置账号级 model_mapping（映射到已定价的 CN 模型）或
 // 分组/渠道显式定价。
 func (s *OpenAIGatewayService) filterCNProviderBillingModelCandidates(ctx context.Context, account *Account, apiKey *APIKey, candidates []string) []string {
-	if account == nil || !(account.IsCNProvider() || account.IsOpenCodeGo()) {
+	if account == nil || (!account.IsCNProvider() && !account.IsOpenCodeGo()) {
 		return candidates
 	}
 	out := make([]string, 0, len(candidates))